she went to the fbi with anonymous threatening e-mails and agents traced those to paula broadwell and uncovered her affair with petraeus. one defense official describes them as flirtatious. another official tells cbs news some of the e-mails were more than friendly exchanges and may have crossed the line. general allen says he did nothing wrong but for now the hearings on his promotion are delayed. >> at the request of the secretary of defense the president has put on hold the promotion to supreme allied commander in europe. >> reporter: both allen and petraeus wrote letters of support for her sister in a custody battle. even though david petraeus resigned lawmakers returning to washington want the hear what he has to -- to hear what he has to say about the giddily attack on the -- deadly attack on the u.s. consulate in libya. >> i think it's absolutely imperative that general petraeus come and testify. >> reporter: some congressional leaders have also called for a joint house senate probe into the petraeus scandal. the white house says the president was surprised to hear about the pe